Bruno API Client Review: Is the Git-Friendly Postman Alternative Worth Switching To?

Bruno API Client Review: Is the Git-Friendly Postman Alternative Worth Switching To?

Postman has become the default tool for API testing and exploration, but its cloud-first model has started to grate on developers who value local control. In 2023, Postman’s decision to remove the offline Scratch Pad and require sign-in for most functionality triggered a wave of user frustration—and a spike of interest in alternatives. Among them, Bruno stands out because it treats your API collections as plain files stored on your disk, designed from the ground up to live in a Git repository alongside your code.

That premise is appealing. But does Bruno actually hold up for day-to-day API work, or is it a niche tool that only appeals to Git purists? This review digs into what Bruno does well, where it falls short, and who should seriously consider switching.

What Is Bruno, and Who Makes It?

Bruno is an open-source API client developed by a small team (originally created by Anoop M D) and distributed under the MIT license. Unlike Postman, Insomnia, or Thunder Client, Bruno stores collections as Bru files—a lightweight plain-text markup format—inside a folder on your filesystem. There is no proprietary cloud sync by default, no account requirement to get started, and no telemetry that phones home with your request data.

The core pitch is simple: your API collections are code. They can be versioned, reviewed, diffed, and merged like any other file in your repo. If your team already uses Git for source control, the workflow feels immediately familiar.

The Git-Friendly Model, Explained

In Postman, collections live in the cloud or in a local workspace, and exporting them produces a single JSON blob that is painful to review in a pull request. A one-line change to a URL can produce a diff that touches hundreds of lines.

Bruno takes the opposite approach. A typical request file looks like this:

meta {
  name: Get User
  type: http
  seq: 1
}

get {
  url: https://api.example.com/users/42
  body: none
  auth: none
}

headers {
  Accept: application/json
}

Each request is its own file. Environment variables live in separate .bru files, and folder structure maps directly to your collection tree. When you change a header, the diff in your Git client shows exactly one line. Reviewers can see the intent of a change at a glance, which is a real quality-of-life improvement for API-heavy teams.

Bruno also supports a “local only” mode and a Git-backed mode, so you can keep sensitive environments out of the repo while still sharing the collection.

Core Features: What Actually Works

Bruno covers the essentials competently:

• HTTP methods: GET, POST, PUT, PATCH, DELETE, and custom verbs
• Auth types: Basic, Bearer, API Key, OAuth 2.0, AWS Sig v4, Digest, and NTLM
• Body types: JSON, form data, multipart, XML, GraphQL, and raw text
• Scripting: Pre-request and post-response scripts written in JavaScript, with a bru and req API
• Assertions: Built-in expect() style tests, plus support for external libraries like Chai
• Environments: Multiple environments with variable scoping
• CLI: A bru command-line runner for CI pipelines
• Import: Postman, Insomnia, OpenAPI, and cURL imports

The scripting layer is where Bruno has matured the most. You can chain requests, extract values from responses into variables, and run assertions that fail a CI build. For most teams, this replaces the Postman “Tests” tab without much friction.

Where Bruno Falls Short

Bruno is not a drop-in Postman replacement, and it’s worth being honest about the gaps.

Ecosystem and integrations. Postman has a vast library of public API collections, a built-in mock server, monitoring, and integrations with CI providers, API gateways, and documentation generators. Bruno has none of that at comparable depth. If your workflow depends on Postman’s mock servers or its public API network, you’ll miss them.

Collaboration without Git. Bruno’s collaboration story assumes Git. Teams that don’t use Git, or that want a shared cloud workspace with role-based permissions, will find Bruno awkward. There’s a paid “Bruno Cloud” offering in development, but it’s not a full replacement for Postman’s team features.

UI polish and performance. Bruno’s desktop app is built on Electron, like Postman, but the interface is more utilitarian. Search across large collections can be slow, and some panels feel less refined. It has improved substantially since 2023, but it still lags Postman in visual polish.

Documentation generation. Postman can publish shareable, hosted API documentation from a collection. Bruno can export to OpenAPI, but you’ll need a separate tool (like Redoc or Swagger UI) to host docs.

Learning curve for scripting. The bru scripting API is well documented but less familiar than Postman’s pm.* API. Migrating existing test scripts requires rewriting them.

Bruno vs. Postman vs. Insomnia: A Quick Comparison

Feature	Bruno	Postman	Insomnia
Local-first storage	Yes (default)	Partial	Yes
Git-friendly format	Yes (plain text)	No (JSON blob)	No
Account required	No	Yes (for most features)	Optional
Cloud sync	Limited / paid	Yes	Yes
Mock server	No	Yes	Yes
CLI runner	Yes (bru)	Yes (Newman)	Yes (inso)
Open source	Yes (MIT)	No	Partial
Price	Free / paid tiers	Free / paid	Free / paid

The pattern is clear: Bruno wins on openness and version control; Postman wins on breadth and collaboration; Insomnia sits somewhere in between.

Who Should Switch to Bruno?

Bruno makes the most sense for:

• Backend and platform teams that already treat infrastructure as code and want API collections reviewed in pull requests
• Developers who dislike mandatory cloud accounts and want their request data to stay on their machine
• Open-source projects that want contributors to submit API changes as ordinary Git commits
• Security-conscious teams that can’t send request payloads to a third-party cloud

It’s a harder sell for:

• Teams without Git or with non-technical stakeholders who need a shared workspace
• Organizations relying on Postman’s mock servers, monitors, or public API network
• Users who want the most polished UI and don’t care about file formats

The Bottom Line

Bruno is a genuinely useful tool built around a smart idea: API collections belong in your repo, not in someone else’s cloud. For teams that live in Git, the diff-friendly Bru format and the lack of an account requirement are real, tangible wins—not marketing fluff. The trade-off is a smaller ecosystem, fewer collaboration features, and a UI that’s functional rather than delightful.

If your API workflow is code-centric and you’ve been frustrated by Postman’s cloud-first direction, Bruno is worth a serious trial. Start with one project, import an existing Postman collection, and see how a pull request that changes a single header feels. If that workflow clicks, the switch is easy to justify. If you depend on Postman’s broader platform, Bruno is a solid complement rather than a full replacement—for now.